Ehow. How to Make a Simple Security Alarm

http://www.ehow.com/how_4488716_make-simple-security-alarm.html

This other webisite also seems simple. It gives you directions on how to make it. It also provides a list of the materials that you need. Once again, the same problem occurs. They have no pictures or videos. How am I suppose to build something without a visual? Anyway, a good thing from this website is the tips they provide at the end. They also have warnings that tell you what not to do. The website claims that this project is easy, so i have to try this one out. This projects seems to be missing a switch. All in all, I will be using some ideas from this website.